The graph shows how many centimeters above a table top, y, a painted spot on an automated hamster wheel is for a given number of seconds x.How many degrees is the painted spot turning in 0.75 s?
At 0 sec.....the painted spot is at its lowest point
The period (one complete revolution) is 1.5 sec....it turns through 360° during this time....
So.....(1/2) of this = .75sec.....so.....it turns through 180° in .75 sec
+509 
